/**
 * @Author: YCKOKO
 * @Date: ${YEAR}-${MONTH}-${DAY}
 * @Time:${HOUR}:${MINUTE}
 * @Description:
 */

class Test{
    public static void hello() {
        System.out.println("hello");
    }
}
public abstract class Main {
    public static void main(String[] args) {
        Test test = null;
        test.hello();
    }
}